🧩 词语组成解析
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
That's five points.
五分。
She failed to call the office to cancel her appointment.
她没能打电话给办公室取消她的约会。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，